Warm tortillas either by toasting them briefly on a griddle or wrapping them in foil and placing them in a 350°F oven for four or five minutes. Place tortillas on individual plates or lay them out on a platter and divide pork evenly among them. Divide the coleslaw evenly over the pork. Drizzle barbecue sauce over slaw. Garnish each taco with a wedge of lime and a fresh sprig of cilantro. Serve warm.